Heat dissipation structure for photovoltaic inverter and photovoltaic inverter

Abstract

The utility model provides a photovoltaic inverter and a heat dissipation structure for the photovoltaic inverter, the photovoltaic inverter comprises a box body, the heat dissipation structure comprises heat dissipation fins arranged in the box body, and a fan module arranged outside the box body, the fan module comprises a shell, a heat dissipation module and a heat dissipation module, the heat dissipation fins are arranged in the box body, the heat dissipation module is arranged in the box body, and the heat dissipation module is arranged in the box body. The shell is connected with the end part of the box body, an openable cover plate and at least one fan are arranged on the shell, and the fan is arranged in the shell; according to the scheme, the structure of the external fan module is adopted, the cooling fan is installed in the shell with the cover plate, and the shell is arranged outside the inverter box body, so that when the fan is maintained or replaced, the inverter does not need to be disassembled from the hanging frame, the inverter shell does not need to be disassembled, only the cover plate on the shell needs to be opened, and the fan can be conveniently replaced. Therefore, the fan in the shell can be maintained or replaced, the heat dissipation structure of the inverter is simplified, and the heat dissipation fan of the inverter can be maintained or replaced conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic inverter structure design, in particular to a heat dissipation structure for a photovoltaic inverter and a photovoltaic inverter. Background Art

[0002] Inverters are widely used as equipment in the photovoltaic power generation industry. The cooling fan in the inverter is a fragile component due to continuous work and needs to be maintained or replaced regularly. Existing inverters all have the fan installed inside the box, and the inverter as a whole needs to be fixedly installed on the equipment bracket. Therefore, when performing maintenance or replacement, the inverter as a whole needs to be removed from the bracket, and the inverter box needs to be disassembled to maintain or replace the fan, which is time-consuming and laborious. Utility Model Content

[0003] The utility model aims to provide a heat dissipation structure for a photovoltaic inverter and a photovoltaic inverter, so as to solve the problem that it is time-consuming and labor-intensive to maintain or replace the heat dissipation fan of the inverter in the prior art.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] In a first aspect, the utility model provides a heat dissipation structure for a photovoltaic inverter, wherein the photovoltaic inverter comprises a box, and the heat dissipation structure comprises:

[0006] heat dissipation fins, the heat dissipation fins are arranged in the box, and

[0007] A fan module, the fan module is arranged outside the box, and the fan module includes:

[0008] A shell, the shell is installed at the end of the box body, and the shell is provided with an openable cover, and

[0009] At least one fan is disposed inside the housing.

[0010] Furthermore, the shell body also includes a shell seat, the cover plate is hinged to the shell seat, and the fan is arranged in an internal area formed by the shell seat and the cover plate.

[0011] Furthermore, a hinge is provided on the surface of the housing, and the hinge comprises:

[0012] A first leaf sheet, wherein the first leaf sheet is fixedly connected to the shell seat,

[0013] Axis, and

[0014] The second sheet is connected to the first sheet via the rotating shaft, and the second sheet is fixedly connected to the cover plate.

[0015] Furthermore, a surface of the housing seat facing away from the fan is detachably connected to an end portion of the box body.

[0016] Furthermore, the fan is detachably disposed in an inner area formed by the housing base and the cover plate.

[0017] Furthermore, a first screw hole is formed on the cover plate, a second screw hole is formed on the fan, and a third screw hole is formed on the shell base. The first screw hole, the second screw hole and the third screw hole are connected to each other, and the screw passes through the first screw hole, the second screw hole and the third screw hole.

[0018] Furthermore, the screw passes through the first screw hole, the second screw hole, and the third screw hole in sequence from the surface of the cover plate facing away from the fan to the surface of the shell base facing away from the fan.

[0019] Furthermore, the screw head of the screw is located on the surface of the cover plate facing away from the fan, the shell seat of the tail end of the screw is facing away from the surface of the fan, and a nut is sleeved on the tail end of the screw.

[0020] Furthermore, a first hollow portion is provided on the cover plate, a second hollow portion is provided on the shell seat, the first hollow portion and the second hollow portion are arranged correspondingly and the fan is located between the first hollow portion and the second hollow portion, a first mesh cover is provided at the first hollow portion, and a second mesh cover is provided at the second hollow portion.

[0021] In a second aspect, the utility model provides a photovoltaic inverter, comprising any one of the heat dissipation structures for photovoltaic inverters.

[0022] The advantages of the utility model are: the utility model is a heat dissipation structure for a photovoltaic inverter and a photovoltaic inverter, which adopts the structure of an external fan module, and the heat dissipation fan is installed in a shell with a cover plate, and the shell is arranged outside the inverter box body, so when maintaining or replacing the fan, there is no need to remove the inverter from the bracket, and there is no need to disassemble the inverter shell. Only the cover plate on the shell needs to be opened to maintain or replace the fan located inside the shell, thereby simplifying the heat dissipation structure of the inverter and facilitating the maintenance or replacement of the heat dissipation fan of the inverter. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 The figure is a schematic diagram of the internal heat dissipation structure of an existing inverter.

[0025] Figure 2 The figure is a schematic diagram of the heat dissipation structure of the inverter in one embodiment of the utility model.

[0026] Figure 3 This is a schematic diagram of the structure of a fan module in one embodiment of the utility model.

[0027] Figure 4 This is a cross-sectional view of the fan module structure in one embodiment of the utility model.

[0028] Figure 5 This is a schematic diagram of the fan structure inside the housing in one embodiment of the utility model.

[0029] Figure 6 This is a cross-sectional view of the inverter structure in another embodiment of the utility model.

[0030] The components in the figure are shown as follows:

[0031] 1. Fan; 2. Cooling fins; 3. Wind shield; 4. Inverter inductor; 5. Boost inductor; 6. Box; 7. Shell; 71. Cover; 72. Shell base; 73. Hinge; 74. Screws; 75. Nuts; 76. Mesh cover. DETAILED DESCRIPTION

[0032] The following describes the preferred embodiments of the utility model with reference to the drawings of the specification to prove that the utility model can be implemented. The utility model embodiments can fully introduce the utility model to those skilled in the art, making the technical content clearer and easier to understand. The utility model can be embodied through many different forms of utility model embodiments, and the protection scope of the utility model is not limited to the embodiments mentioned in the text.

[0033] In the drawings, components with the same structure are indicated by the same numerical labels, and components with similar structures or functions are indicated by similar numerical labels. The size and thickness of each component shown in the drawings are shown arbitrarily, and the present invention does not limit the size and thickness of each component. In order to make the illustration clearer, the thickness of the components is appropriately exaggerated in some places in the drawings.

[0034] In addition, the following descriptions of the various utility model embodiments refer to the attached diagrams to illustrate specific utility model embodiments that the utility model can be implemented. The directional terms mentioned in the utility model, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", "side", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer description and understanding of the utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0035] When some components are described as being "on" another component, the component may be directly placed on the other component; there may also be an intermediate component on which the component is placed, and the intermediate component is placed on the other component. When a component is described as being "mounted on" or "connected to" another component, the two may be understood to be directly "mounted on" or "connected", or one component may be indirectly "mounted on" or "connected to" another component via an intermediate component.

[0036] Overview

[0037] As described in the background technology, Figure 1 As shown, conventional inverters all arrange the fan 1 inside the housing, the inverter inductor 4 and the boost inductor 5 are also arranged inside the housing and at the edge, the fan 1 is located in the area between the inverter inductor and the heat sink fins 2, and a wind shield 3 is also arranged outside the fan 1 and the heat sink fins 2. Therefore, when the fan needs to be maintained or replaced, the inverter needs to be removed from the bracket first, and then the inverter housing and the wind shield are disassembled in turn to maintain or replace the fan. The process is cumbersome, time-consuming and labor-intensive. At the same time, frequent disassembly of the inverter housing will increase the probability of damage to its internal components, thereby reducing the service life of the equipment.

[0038] In view of the above content, the inventor has improved the heat dissipation structure of the inverter, adopting the structure of an external fan module, and installing the cooling fan in a shell with a cover, and the shell is arranged on the outside of the inverter case. In this way, when maintaining or replacing the fan, there is no need to remove the inverter from the bracket or disassemble the inverter shell. Only the cover on the shell needs to be opened to maintain or replace the fan inside the shell, thereby simplifying the heat dissipation structure of the inverter and facilitating the maintenance or replacement of the cooling fan of the inverter.

[0039] Based on the above concept, the present application will be exemplarily described below in conjunction with the accompanying drawings.

[0040] Exemplary Structure

[0041] This embodiment provides a heat dissipation structure for a photovoltaic inverter, such as Figure 2 As shown, including:

[0042] The heat dissipation fins 2 are arranged inside the box 6 of the photovoltaic inverter.

[0043] The fan module is arranged outside the box 6 of the photovoltaic inverter. The fan module includes a shell 7 and a row of fans 1 arranged in the shell 7. An openable cover 71 is provided on the shell 7. When the fan 1 needs to be maintained or replaced, it is only necessary to open the cover 71 on the shell 7 to maintain or replace the fan 1 inside the shell 7.

[0044] In some embodiments, Figure 3 As shown, the housing 7 further includes a housing seat 72, a cover plate 71 is hinged to the housing seat 72, and the fan 1 is arranged in an inner area formed by the housing seat 72 and the cover plate 71. The inner area of ​​the housing 7 can be opened by flipping the cover plate 71.

[0045] In some embodiments, Figure 3 As shown, a hinge 73 is installed at the hinged portion of the shell base 72 and the cover plate 71. The hinge 73 includes a first leaf and a second leaf connected to the first leaf via a rotating shaft. The first leaf is fixedly mounted on the shell base 72 by screws, and the second leaf is fixedly mounted on the cover plate 71 by screws.

[0046] In some embodiments, the shell base 72 of the shell 7 is fixedly connected to the end of the inverter case 6 by screws near the surface of the inverter case 6, and the entire fan module can be removed from the inverter case 6 by removing the screws, thereby realizing the function of quickly replacing the entire fan module.

[0047] In some embodiments, Figure 5 As shown, the fan 1 is installed in the housing 7 by screws. When the fan 1 needs to be removed for replacement, the fan 1 can be quickly removed for replacement by simply removing the screws.

[0048] In some embodiments, Figure 4 As shown, corresponding screw holes are provided on the cover plate 71, the fan 1, and the housing seat 72. When installing the fan 1, the fan 1 is placed in a designated position in the housing seat 72, and then the cover plate 71 is covered. Finally, screws 74 are passed through the three corresponding screw holes at the same time, so that the housing seat 72, the fan 1, and the cover plate 71 are fixed together.

[0049] In some embodiments, Figure 4As shown, the screw 74 passes through the first screw hole, the second screw hole, and the third screw hole from the surface of the cover plate 71 to the back of the shell base 72. The back of the shell base 72 is close to the box body 6 of the inverter. Since the cover plate 71 is on the outer side and the shell base 72 is on the inner side, the screw head of the screw 74 is facing outward and the tail end of the screw 74 is inserted inward during the actual installation process. This facilitates installation and disassembly. At the same time, a nut 75 is sleeved on the tail end of the screw 74 to increase the fixing strength.

[0050] In some embodiments, a first hollow portion is opened on the cover plate 71, and a second hollow portion is opened on the shell seat 72. The first hollow portion and the second hollow portion correspond in position to each other. The first hollow portion and the second hollow portion both serve as air outlets of the fan 1. The fan 1 is arranged in the area between the two hollow portions, and mesh covers 76 are installed at positions corresponding to the two hollow portions.

[0051] Exemplary Devices

[0052] This embodiment provides a photovoltaic inverter, such as Figure 6 As shown, the photovoltaic inverter includes a box body 6, a PCB assembly disposed in the box body 6, a heat dissipation fin 2 disposed in the box body 6, and a fan assembly disposed at the outer end of the box body 6, wherein:

[0053] The heat sink 2 is attached to the PCB assembly to dissipate heat from the PCB assembly.

[0054] The fan assembly includes a housing 7 and a fan 1. The fan 1 in the housing 7 faces the heat dissipation fins 2 and forms a whole heat dissipation air duct inside the box body 6. The airflow formed by the fan 1 takes away the heat on the heat dissipation fins 2.

[0055] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments, and other arrangements may be designed without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the features described in the various dependent claims and herein may be combined in a manner different from that described in the original claims. It may also be understood that the features described in conjunction with the individual embodiments may be used in other described embodiments.

Claims

1. A heat dissipation structure for a photovoltaic inverter, the photovoltaic inverter comprising a box, characterized in that: The heat dissipation structure comprises: heat dissipation fins, the heat dissipation fins are arranged in the box, and A fan module, the fan module is arranged outside the box, and the fan module includes: A shell, the shell is installed at the end of the box body, and the shell is provided with an openable cover, and At least one fan is disposed inside the housing.

2. The heat dissipation structure for photovoltaic inverter according to claim 1, characterized in that: The shell body also includes a shell seat, the cover plate is hinged to the shell seat, and the fan is arranged in an internal area formed by the shell seat and the cover plate.

3. The heat dissipation structure for photovoltaic inverter according to claim 2, characterized in that: The surface of the housing is provided with a hinge, and the hinge comprises: A first leaf sheet, wherein the first leaf sheet is fixedly connected to the shell seat, Axis, and The second sheet is connected to the first sheet via the rotating shaft, and the second sheet is fixedly connected to the cover plate.

4. The heat dissipation structure for photovoltaic inverter according to claim 2, characterized in that: The surface of the shell seat facing away from the fan is detachably connected to the end of the box body.

5. The heat dissipation structure for photovoltaic inverter according to claim 2, characterized in that: The fan is detachably arranged in an inner area formed by the housing seat and the cover plate.

6. The heat dissipation structure for photovoltaic inverter according to claim 5, characterized in that: A first screw hole is formed on the cover plate, a second screw hole is formed on the fan, and a third screw hole is formed on the shell base. The first screw hole, the second screw hole and the third screw hole are connected to each other, and the screw passes through the first screw hole, the second screw hole and the third screw hole.

7. The heat dissipation structure for a photovoltaic inverter according to claim 6, characterized in that: The screw passes through the first screw hole, the second screw hole, and the third screw hole in sequence from the surface of the cover plate away from the fan to the surface of the shell base away from the fan.

8. The heat dissipation structure for a photovoltaic inverter according to claim 7, characterized in that: The screw head of the screw is located on the surface of the cover plate away from the fan, the shell seat at the tail end of the screw is away from the surface of the fan, and a nut is sleeved on the tail end of the screw.

9. The heat dissipation structure for a photovoltaic inverter according to claim 2, characterized in that: A first hollow portion is formed on the cover plate, a second hollow portion is formed on the shell seat, the first hollow portion and the second hollow portion are arranged correspondingly and the fan is located between the first hollow portion and the second hollow portion, a first mesh cover is arranged at the first hollow portion, and a second mesh cover is arranged at the second hollow portion.

10. A photovoltaic inverter, characterized in that: The invention comprises a heat dissipation structure for a photovoltaic inverter as claimed in any one of claims 1 to 9.

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